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6305f49860
linux/drivers/net/wireless/libertas/cmdresp.c
David Woodhouse 6305f49860 libertas: fix sanity check on sequence number in command response 
Slightly more useful if we compare it against the sequence number of the
command we have outstanding, rather than comparing the reply with itself.

Doh. Pointed out by Sebastian Siewior

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-03-04 18:36:37 -05:00

870 lines
23 KiB
C
Raw Blame History

/**
* This file contains the handling of command
* responses as well as events generated by firmware.
*/
#include <linux/delay.h>
#include <linux/if_arp.h>
#include <linux/netdevice.h>
#include <net/iw_handler.h>
#include "host.h"
#include "decl.h"
#include "defs.h"
#include "dev.h"
#include "join.h"
#include "wext.h"
/**
* @brief This function handles disconnect event. it
* reports disconnect to upper layer, clean tx/rx packets,
* reset link state etc.
*
* @param priv A pointer to struct lbs_private structure
* @return n/a
*/
void lbs_mac_event_disconnected(struct lbs_private *priv)
{
union iwreq_data wrqu;
if (priv->connect_status != LBS_CONNECTED)
return;
lbs_deb_enter(LBS_DEB_ASSOC);
memset(wrqu.ap_addr.sa_data, 0x00, ETH_ALEN);
wrqu.ap_addr.sa_family = ARPHRD_ETHER;
/*
* Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
* It causes problem in the Supplicant
*/
msleep_interruptible(1000);
wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
/* report disconnect to upper layer */
netif_stop_queue(priv->dev);
netif_carrier_off(priv->dev);
/* Free Tx and Rx packets */
kfree_skb(priv->currenttxskb);
priv->currenttxskb = NULL;
priv->tx_pending_len = 0;
/* reset SNR/NF/RSSI values */
memset(priv->SNR, 0x00, sizeof(priv->SNR));
memset(priv->NF, 0x00, sizeof(priv->NF));
memset(priv->RSSI, 0x00, sizeof(priv->RSSI));
memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
priv->nextSNRNF = 0;
priv->numSNRNF = 0;
priv->connect_status = LBS_DISCONNECTED;
/* Clear out associated SSID and BSSID since connection is
* no longer valid.
*/
memset(&priv->curbssparams.bssid, 0, ETH_ALEN);
memset(&priv->curbssparams.ssid, 0, IW_ESSID_MAX_SIZE);
priv->curbssparams.ssid_len = 0;
if (priv->psstate != PS_STATE_FULL_POWER) {
/* make firmware to exit PS mode */
lbs_deb_cmd("disconnected, so exit PS mode\n");
lbs_ps_wakeup(priv, 0);
}
lbs_deb_leave(LBS_DEB_CMD);
}
/**
* @brief This function handles MIC failure event.
*
* @param priv A pointer to struct lbs_private structure
* @para event the event id
* @return n/a
*/
static void handle_mic_failureevent(struct lbs_private *priv, u32 event)
{
char buf[50];
lbs_deb_enter(LBS_DEB_CMD);
memset(buf, 0, sizeof(buf));
sprintf(buf, "%s", "MLME-MICHAELMICFAILURE.indication ");
if (event == MACREG_INT_CODE_MIC_ERR_UNICAST) {
strcat(buf, "unicast ");
} else {
strcat(buf, "multicast ");
}
lbs_send_iwevcustom_event(priv, buf);
lbs_deb_leave(LBS_DEB_CMD);
}
static int lbs_ret_reg_access(struct lbs_private *priv,
u16 type, struct cmd_ds_command *resp)
{
int ret = 0;
lbs_deb_enter(LBS_DEB_CMD);
switch (type) {
case CMD_RET(CMD_MAC_REG_ACCESS):
{
struct cmd_ds_mac_reg_access *reg = &resp->params.macreg;
priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
priv->offsetvalue.value = le32_to_cpu(reg->value);
break;
}
case CMD_RET(CMD_BBP_REG_ACCESS):
{
struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg;
priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
priv->offsetvalue.value = reg->value;
break;
}
case CMD_RET(CMD_RF_REG_ACCESS):
{
struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg;
priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
priv->offsetvalue.value = reg->value;
break;
}
default:
ret = -1;
}
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
static int lbs_ret_802_11_stat(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
lbs_deb_enter(LBS_DEB_CMD);
/* currently priv->wlan802_11Stat is unused
struct cmd_ds_802_11_get_stat *p11Stat = &resp->params.gstat;
// TODO Convert it to Big endian befor copy
memcpy(&priv->wlan802_11Stat,
p11Stat, sizeof(struct cmd_ds_802_11_get_stat));
*/
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_802_11_snmp_mib(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11_snmp_mib *smib = &resp->params.smib;
u16 oid = le16_to_cpu(smib->oid);
u16 querytype = le16_to_cpu(smib->querytype);
lbs_deb_enter(LBS_DEB_CMD);
lbs_deb_cmd("SNMP_RESP: oid 0x%x, querytype 0x%x\n", oid,
querytype);
lbs_deb_cmd("SNMP_RESP: Buf size %d\n", le16_to_cpu(smib->bufsize));
if (querytype == CMD_ACT_GET) {
switch (oid) {
case FRAGTHRESH_I:
priv->fragthsd =
le16_to_cpu(*((__le16 *)(smib->value)));
lbs_deb_cmd("SNMP_RESP: frag threshold %u\n",
priv->fragthsd);
break;
case RTSTHRESH_I:
priv->rtsthsd =
le16_to_cpu(*((__le16 *)(smib->value)));
lbs_deb_cmd("SNMP_RESP: rts threshold %u\n",
priv->rtsthsd);
break;
case SHORT_RETRYLIM_I:
priv->txretrycount =
le16_to_cpu(*((__le16 *)(smib->value)));
lbs_deb_cmd("SNMP_RESP: tx retry count %u\n",
priv->rtsthsd);
break;
default:
break;
}
}
lbs_deb_enter(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_802_11_key_material(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11_key_material *pkeymaterial =
&resp->params.keymaterial;
u16 action = le16_to_cpu(pkeymaterial->action);
lbs_deb_enter(LBS_DEB_CMD);
/* Copy the returned key to driver private data */
if (action == CMD_ACT_GET) {
u8 * buf_ptr = (u8 *) &pkeymaterial->keyParamSet;
u8 * resp_end = (u8 *) (resp + le16_to_cpu(resp->size));
while (buf_ptr < resp_end) {
struct MrvlIEtype_keyParamSet * pkeyparamset =
(struct MrvlIEtype_keyParamSet *) buf_ptr;
struct enc_key * pkey;
u16 param_set_len = le16_to_cpu(pkeyparamset->length);
u16 key_len = le16_to_cpu(pkeyparamset->keylen);
u16 key_flags = le16_to_cpu(pkeyparamset->keyinfo);
u16 key_type = le16_to_cpu(pkeyparamset->keytypeid);
u8 * end;
end = (u8 *) pkeyparamset + sizeof (pkeyparamset->type)
+ sizeof (pkeyparamset->length)
+ param_set_len;
/* Make sure we don't access past the end of the IEs */
if (end > resp_end)
break;
if (key_flags & KEY_INFO_WPA_UNICAST)
pkey = &priv->wpa_unicast_key;
else if (key_flags & KEY_INFO_WPA_MCAST)
pkey = &priv->wpa_mcast_key;
else
break;
/* Copy returned key into driver */
memset(pkey, 0, sizeof(struct enc_key));
if (key_len > sizeof(pkey->key))
break;
pkey->type = key_type;
pkey->flags = key_flags;
pkey->len = key_len;
memcpy(pkey->key, pkeyparamset->key, pkey->len);
buf_ptr = end + 1;
}
}
lbs_deb_enter(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_802_11_mac_address(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11_mac_address *macadd = &resp->params.macadd;
lbs_deb_enter(LBS_DEB_CMD);
memcpy(priv->current_addr, macadd->macadd, ETH_ALEN);
lbs_deb_enter(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_802_11_rf_tx_power(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11_rf_tx_power *rtp = &resp->params.txp;
lbs_deb_enter(LBS_DEB_CMD);
priv->txpowerlevel = le16_to_cpu(rtp->currentlevel);
lbs_deb_cmd("TX power currently %d\n", priv->txpowerlevel);
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_802_11_rate_adapt_rateset(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11_rate_adapt_rateset *rates = &resp->params.rateset;
lbs_deb_enter(LBS_DEB_CMD);
if (rates->action == CMD_ACT_GET) {
priv->enablehwauto = le16_to_cpu(rates->enablehwauto);
priv->ratebitmap = le16_to_cpu(rates->bitmap);
}
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_802_11_rssi(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11_rssi_rsp *rssirsp = &resp->params.rssirsp;
lbs_deb_enter(LBS_DEB_CMD);
/* store the non average value */
priv->SNR[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->SNR);
priv->NF[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->noisefloor);
priv->SNR[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgSNR);
priv->NF[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgnoisefloor);
priv->RSSI[TYPE_BEACON][TYPE_NOAVG] =
CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_NOAVG],
priv->NF[TYPE_BEACON][TYPE_NOAVG]);
priv->RSSI[TYPE_BEACON][TYPE_AVG] =
CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_AVG] / AVG_SCALE,
priv->NF[TYPE_BEACON][TYPE_AVG] / AVG_SCALE);
lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
priv->RSSI[TYPE_BEACON][TYPE_NOAVG],
priv->RSSI[TYPE_BEACON][TYPE_AVG]);
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_802_11_eeprom_access(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
struct lbs_ioctl_regrdwr *pbuf;
pbuf = (struct lbs_ioctl_regrdwr *) priv->prdeeprom;
lbs_deb_enter_args(LBS_DEB_CMD, "len %d",
le16_to_cpu(resp->params.rdeeprom.bytecount));
if (pbuf->NOB < le16_to_cpu(resp->params.rdeeprom.bytecount)) {
pbuf->NOB = 0;
lbs_deb_cmd("EEPROM read length too big\n");
return -1;
}
pbuf->NOB = le16_to_cpu(resp->params.rdeeprom.bytecount);
if (pbuf->NOB > 0) {
memcpy(&pbuf->value, (u8 *) & resp->params.rdeeprom.value,
le16_to_cpu(resp->params.rdeeprom.bytecount));
lbs_deb_hex(LBS_DEB_CMD, "EEPROM", (char *)&pbuf->value,
le16_to_cpu(resp->params.rdeeprom.bytecount));
}
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_get_log(struct lbs_private *priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11_get_log *logmessage = &resp->params.glog;
lbs_deb_enter(LBS_DEB_CMD);
/* Stored little-endian */
memcpy(&priv->logmsg, logmessage, sizeof(struct cmd_ds_802_11_get_log));
lbs_deb_leave(LBS_DEB_CMD);
return 0;
}
static int lbs_ret_802_11_bcn_ctrl(struct lbs_private * priv,
struct cmd_ds_command *resp)
{
struct cmd_ds_802_11_beacon_control *bcn_ctrl =
&resp->params.bcn_ctrl;
lbs_deb_enter(LBS_DEB_CMD);
if (bcn_ctrl->action == CMD_ACT_GET) {
priv->beacon_enable = (u8) le16_to_cpu(bcn_ctrl->beacon_enable);
priv->beacon_period = le16_to_cpu(bcn_ctrl->beacon_period);
}
lbs_deb_enter(LBS_DEB_CMD);
return 0;
}
static inline int handle_cmd_response(struct lbs_private *priv,
unsigned long dummy,
struct cmd_header *cmd_response)
{
struct cmd_ds_command *resp = (struct cmd_ds_command *) cmd_response;
int ret = 0;
unsigned long flags;
uint16_t respcmd = le16_to_cpu(resp->command);
lbs_deb_enter(LBS_DEB_HOST);
switch (respcmd) {
case CMD_RET(CMD_MAC_REG_ACCESS):
case CMD_RET(CMD_BBP_REG_ACCESS):
case CMD_RET(CMD_RF_REG_ACCESS):
ret = lbs_ret_reg_access(priv, respcmd, resp);
break;
case CMD_RET(CMD_802_11_SCAN):
ret = lbs_ret_80211_scan(priv, resp);
break;
case CMD_RET(CMD_802_11_GET_LOG):
ret = lbs_ret_get_log(priv, resp);
break;
case CMD_RET_802_11_ASSOCIATE:
case CMD_RET(CMD_802_11_ASSOCIATE):
case CMD_RET(CMD_802_11_REASSOCIATE):
ret = lbs_ret_80211_associate(priv, resp);
break;
case CMD_RET(CMD_802_11_DISASSOCIATE):
case CMD_RET(CMD_802_11_DEAUTHENTICATE):
ret = lbs_ret_80211_disassociate(priv, resp);
break;
case CMD_RET(CMD_802_11_AD_HOC_START):
case CMD_RET(CMD_802_11_AD_HOC_JOIN):
ret = lbs_ret_80211_ad_hoc_start(priv, resp);
break;
case CMD_RET(CMD_802_11_GET_STAT):
ret = lbs_ret_802_11_stat(priv, resp);
break;
case CMD_RET(CMD_802_11_SNMP_MIB):
ret = lbs_ret_802_11_snmp_mib(priv, resp);
break;
case CMD_RET(CMD_802_11_RF_TX_POWER):
ret = lbs_ret_802_11_rf_tx_power(priv, resp);
break;
case CMD_RET(CMD_802_11_SET_AFC):
case CMD_RET(CMD_802_11_GET_AFC):
spin_lock_irqsave(&priv->driver_lock, flags);
memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
sizeof(struct cmd_ds_802_11_afc));
spin_unlock_irqrestore(&priv->driver_lock, flags);
break;
case CMD_RET(CMD_MAC_MULTICAST_ADR):
case CMD_RET(CMD_MAC_CONTROL):
case CMD_RET(CMD_802_11_RESET):
case CMD_RET(CMD_802_11_AUTHENTICATE):
case CMD_RET(CMD_802_11_BEACON_STOP):
break;
case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET):
ret = lbs_ret_802_11_rate_adapt_rateset(priv, resp);
break;
case CMD_RET(CMD_802_11_RSSI):
ret = lbs_ret_802_11_rssi(priv, resp);
break;
case CMD_RET(CMD_802_11_MAC_ADDRESS):
ret = lbs_ret_802_11_mac_address(priv, resp);
break;
case CMD_RET(CMD_802_11_AD_HOC_STOP):
ret = lbs_ret_80211_ad_hoc_stop(priv, resp);
break;
case CMD_RET(CMD_802_11_KEY_MATERIAL):
ret = lbs_ret_802_11_key_material(priv, resp);
break;
case CMD_RET(CMD_802_11_EEPROM_ACCESS):
ret = lbs_ret_802_11_eeprom_access(priv, resp);
break;
case CMD_RET(CMD_802_11D_DOMAIN_INFO):
ret = lbs_ret_802_11d_domain_info(priv, resp);
break;
case CMD_RET(CMD_802_11_TPC_CFG):
spin_lock_irqsave(&priv->driver_lock, flags);
memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
sizeof(struct cmd_ds_802_11_tpc_cfg));
spin_unlock_irqrestore(&priv->driver_lock, flags);
break;
case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
spin_lock_irqsave(&priv->driver_lock, flags);
memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
sizeof(struct cmd_ds_802_11_led_ctrl));
spin_unlock_irqrestore(&priv->driver_lock, flags);
break;
case CMD_RET(CMD_802_11_PWR_CFG):
spin_lock_irqsave(&priv->driver_lock, flags);
memmove((void *)priv->cur_cmd->callback_arg, &resp->params.pwrcfg,
sizeof(struct cmd_ds_802_11_pwr_cfg));
spin_unlock_irqrestore(&priv->driver_lock, flags);
break;
case CMD_RET(CMD_GET_TSF):
spin_lock_irqsave(&priv->driver_lock, flags);
memcpy((void *)priv->cur_cmd->callback_arg,
&resp->params.gettsf.tsfvalue, sizeof(u64));
spin_unlock_irqrestore(&priv->driver_lock, flags);
break;
case CMD_RET(CMD_BT_ACCESS):
spin_lock_irqsave(&priv->driver_lock, flags);
if (priv->cur_cmd->callback_arg)
memcpy((void *)priv->cur_cmd->callback_arg,
&resp->params.bt.addr1, 2 * ETH_ALEN);
spin_unlock_irqrestore(&priv->driver_lock, flags);
break;
case CMD_RET(CMD_FWT_ACCESS):
spin_lock_irqsave(&priv->driver_lock, flags);
if (priv->cur_cmd->callback_arg)
memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
sizeof(resp->params.fwt));
spin_unlock_irqrestore(&priv->driver_lock, flags);
break;
case CMD_RET(CMD_802_11_BEACON_CTRL):
ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
break;
default:
lbs_deb_host("CMD_RESP: unknown cmd response 0x%04x\n",
le16_to_cpu(resp->command));
break;
}
lbs_deb_leave(LBS_DEB_HOST);
return ret;
}
int lbs_process_rx_command(struct lbs_private *priv)
{
uint16_t respcmd, curcmd;
struct cmd_header *resp;
int ret = 0;
unsigned long flags;
uint16_t result;
lbs_deb_enter(LBS_DEB_HOST);
mutex_lock(&priv->lock);
spin_lock_irqsave(&priv->driver_lock, flags);
if (!priv->cur_cmd) {
lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
ret = -1;
spin_unlock_irqrestore(&priv->driver_lock, flags);
goto done;
}
resp = (void *)priv->upld_buf;
curcmd = le16_to_cpu(resp->command);
respcmd = le16_to_cpu(resp->command);
result = le16_to_cpu(resp->result);
lbs_deb_host("CMD_RESP: response 0x%04x, seq %d, size %d, jiffies %lu\n",
respcmd, le16_to_cpu(resp->seqnum), priv->upld_len, jiffies);
lbs_deb_hex(LBS_DEB_HOST, "CMD_RESP", (void *) resp, priv->upld_len);
if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = -1;
goto done;
}
if (respcmd != CMD_RET(curcmd) &&
respcmd != CMD_802_11_ASSOCIATE && curcmd != CMD_RET_802_11_ASSOCIATE) {
lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = -1;
goto done;
}
if (resp->result == cpu_to_le16(0x0004)) {
/* 0x0004 means -EAGAIN. Drop the response, let it time out
and be resubmitted */
lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
le16_to_cpu(resp->command));
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = -1;
goto done;
}
/* Now we got response from FW, cancel the command timer */
del_timer(&priv->command_timer);
priv->cmd_timed_out = 0;
if (priv->nr_retries) {
lbs_pr_info("Received result %x to command %x after %d retries\n",
result, curcmd, priv->nr_retries);
priv->nr_retries = 0;
}
/* Store the response code to cur_cmd_retcode. */
priv->cur_cmd_retcode = result;
if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
u16 action = le16_to_cpu(psmode->action);
lbs_deb_host(
"CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
result, action);
if (result) {
lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
result);
/*
* We should not re-try enter-ps command in
* ad-hoc mode. It takes place in
* lbs_execute_next_command().
*/
if (priv->mode == IW_MODE_ADHOC &&
action == CMD_SUBCMD_ENTER_PS)
priv->psmode = LBS802_11POWERMODECAM;
} else if (action == CMD_SUBCMD_ENTER_PS) {
priv->needtowakeup = 0;
priv->psstate = PS_STATE_AWAKE;
lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
if (priv->connect_status != LBS_CONNECTED) {
/*
* When Deauth Event received before Enter_PS command
* response, We need to wake up the firmware.
*/
lbs_deb_host(
"disconnected, invoking lbs_ps_wakeup\n");
spin_unlock_irqrestore(&priv->driver_lock, flags);
mutex_unlock(&priv->lock);
lbs_ps_wakeup(priv, 0);
mutex_lock(&priv->lock);
spin_lock_irqsave(&priv->driver_lock, flags);
}
} else if (action == CMD_SUBCMD_EXIT_PS) {
priv->needtowakeup = 0;
priv->psstate = PS_STATE_FULL_POWER;
lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
} else {
lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
}
lbs_complete_command(priv, priv->cur_cmd, result);
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = 0;
goto done;
}
/* If the command is not successful, cleanup and return failure */
if ((result != 0 || !(respcmd & 0x8000))) {
lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
result, respcmd);
/*
* Handling errors here
*/
switch (respcmd) {
case CMD_RET(CMD_GET_HW_SPEC):
case CMD_RET(CMD_802_11_RESET):
lbs_deb_host("CMD_RESP: reset failed\n");
break;
}
lbs_complete_command(priv, priv->cur_cmd, result);
spin_unlock_irqrestore(&priv->driver_lock, flags);
ret = -1;
goto done;
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
if (priv->cur_cmd && priv->cur_cmd->callback) {
ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
resp);
} else
ret = handle_cmd_response(priv, 0, resp);
spin_lock_irqsave(&priv->driver_lock, flags);
if (priv->cur_cmd) {
/* Clean up and Put current command back to cmdfreeq */
lbs_complete_command(priv, priv->cur_cmd, result);
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
done:
mutex_unlock(&priv->lock);
lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
return ret;
}
static int lbs_send_confirmwake(struct lbs_private *priv)
{
struct cmd_header *cmd = &priv->lbs_ps_confirm_wake;
int ret = 0;
lbs_deb_enter(LBS_DEB_HOST);
cmd->command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
cmd->size = cpu_to_le16(sizeof(*cmd));
cmd->seqnum = cpu_to_le16(++priv->seqnum);
cmd->result = 0;
lbs_deb_host("SEND_WAKEC_CMD: before download\n");
lbs_deb_hex(LBS_DEB_HOST, "wake confirm command", (void *)cmd, sizeof(*cmd));
ret = priv->hw_host_to_card(priv, MVMS_CMD, (void *)cmd, sizeof(*cmd));
if (ret)
lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
return ret;
}
int lbs_process_event(struct lbs_private *priv)
{
int ret = 0;
u32 eventcause;
lbs_deb_enter(LBS_DEB_CMD);
spin_lock_irq(&priv->driver_lock);
eventcause = priv->eventcause >> SBI_EVENT_CAUSE_SHIFT;
spin_unlock_irq(&priv->driver_lock);
lbs_deb_cmd("event cause %d\n", eventcause);
switch (eventcause) {
case MACREG_INT_CODE_LINK_SENSED:
lbs_deb_cmd("EVENT: MACREG_INT_CODE_LINK_SENSED\n");
break;
case MACREG_INT_CODE_DEAUTHENTICATED:
lbs_deb_cmd("EVENT: deauthenticated\n");
lbs_mac_event_disconnected(priv);
break;
case MACREG_INT_CODE_DISASSOCIATED:
lbs_deb_cmd("EVENT: disassociated\n");
lbs_mac_event_disconnected(priv);
break;
case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
lbs_deb_cmd("EVENT: link lost\n");
lbs_mac_event_disconnected(priv);
break;
case MACREG_INT_CODE_PS_SLEEP:
lbs_deb_cmd("EVENT: sleep\n");
/* handle unexpected PS SLEEP event */
if (priv->psstate == PS_STATE_FULL_POWER) {
lbs_deb_cmd(
"EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
break;
}
priv->psstate = PS_STATE_PRE_SLEEP;
lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
break;
case MACREG_INT_CODE_HOST_AWAKE:
lbs_deb_cmd("EVENT: HOST_AWAKE\n");
lbs_send_confirmwake(priv);
break;
case MACREG_INT_CODE_PS_AWAKE:
lbs_deb_cmd("EVENT: awake\n");
/* handle unexpected PS AWAKE event */
if (priv->psstate == PS_STATE_FULL_POWER) {
lbs_deb_cmd(
"EVENT: In FULL POWER mode - ignore PS AWAKE\n");
break;
}
priv->psstate = PS_STATE_AWAKE;
if (priv->needtowakeup) {
/*
* wait for the command processing to finish
* before resuming sending
* priv->needtowakeup will be set to FALSE
* in lbs_ps_wakeup()
*/
lbs_deb_cmd("waking up ...\n");
lbs_ps_wakeup(priv, 0);
}
break;
case MACREG_INT_CODE_MIC_ERR_UNICAST:
lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
break;
case MACREG_INT_CODE_MIC_ERR_MULTICAST:
lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
break;
case MACREG_INT_CODE_MIB_CHANGED:
case MACREG_INT_CODE_INIT_DONE:
break;
case MACREG_INT_CODE_ADHOC_BCN_LOST:
lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
break;
case MACREG_INT_CODE_RSSI_LOW:
lbs_pr_alert("EVENT: rssi low\n");
break;
case MACREG_INT_CODE_SNR_LOW:
lbs_pr_alert("EVENT: snr low\n");
break;
case MACREG_INT_CODE_MAX_FAIL:
lbs_pr_alert("EVENT: max fail\n");
break;
case MACREG_INT_CODE_RSSI_HIGH:
lbs_pr_alert("EVENT: rssi high\n");
break;
case MACREG_INT_CODE_SNR_HIGH:
lbs_pr_alert("EVENT: snr high\n");
break;
case MACREG_INT_CODE_MESH_AUTO_STARTED:
/* Ignore spurious autostart events if autostart is disabled */
if (!priv->mesh_autostart_enabled) {
lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
break;
}
lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
priv->mesh_connect_status = LBS_CONNECTED;
if (priv->mesh_open) {
netif_carrier_on(priv->mesh_dev);
if (!priv->tx_pending_len)
netif_wake_queue(priv->mesh_dev);
}
priv->mode = IW_MODE_ADHOC;
schedule_work(&priv->sync_channel);
break;
default:
lbs_pr_alert("EVENT: unknown event id %d\n", eventcause);
break;
}
spin_lock_irq(&priv->driver_lock);
priv->eventcause = 0;
spin_unlock_irq(&priv->driver_lock);
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
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